Supercapacitor electrodes based on polyaniline-silicon nanoparticle composite

Qiang Liu, Munir H. Nayfeh, Siu Tung Yau

Research output: Contribution to journalArticlepeer-review


A composite material formed by dispersing ultrasmall silicon nanoparticles in polyaniline has been used as the electrode material for supercapacitors. Electrochemical characterization of the composite indicates that the nanoparticles give rise to double-layer capacitance while polyaniline produces pseudocapacitance. The composite shows significantly improved capacitance compared to that of polyaniline. The enhanced capacitance results in high power (220 kW kg-1) and energy-storage (30 Wh kg-1) capabilities of the composite material. A prototype supercapacitor using the composite as the charge storage material has been constructed. The capacitor showed the enhanced capacitance and good device stability during 1000 charging/discharging cycles.

Original languageEnglish (US)
Pages (from-to)3956-3959
Number of pages4
JournalJournal of Power Sources
Issue number12
StatePublished - Jun 15 2010


  • Composite material
  • Nanoparticle
  • Supercapacitor

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering


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